<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar class="page-nav-bar" title="标题">
      <van-icon slot="left" name="cross"
      @click="$router.back()" />
    </van-nav-bar>
    <van-field name="rate" label="评分">
      <template #input>
        <van-rate v-model="rate" />
      </template>
    </van-field>
    <!-- 登录表单 -->
    <van-form ref="loginForm" @submit="onSubmit">
      <van-field
        v-model="user.mobile"
        name="mobile"
        placeholder="请输入手机号"
        :rules="userFormRules.mobile"
        type="number"
        maxlength="11"
        ><i slot="left-icon" class="toutiao toutiao-shouji"></i
      ></van-field>

      <van-field
        v-model="user.code"
        name="code"
        placeholder="请输入验证码"
        :rules="userFormRules.code"
        type="number"
        maxlength="6"
        ><i slot="left-icon" class="toutiao toutiao-yanzhengma"></i
        ><template #button>
         <!-- 倒计时 -->
<van-count-down v-if="isCountDownShow"
 :time="1000 * 3"
 format="ss s"
 @finish="isCountDownShow = false"

 />
<!-- 发送验证码按钮 -->
            <van-button
            v-else
native-type="button"
            class="send-sms-btn"
            size="small"
            type="primary"
            @click="onSendSms"
            >发送验证码</van-button
          >
        </template>
      </van-field>
      <div class="login-btn-wrap" style="margin: 16px">
        <van-button  class="login-btn" block type="info" native-type="submit"
          >提交</van-button
        >
      </div>
    </van-form>
  </div>
</template>

<script>
import { login } from '@/api/user'
export default {
  name: 'aLogin',
  components: {},
  props: {},
  data () {
    return {
      isCountDownShow: false, // 控制倒计时的显示和隐藏

      rate: 3,
      user: {
        mobile: '', // 手机号
        code: '' // 验证码
      },
      userFormRules: {
        mobile: [
          { required: true, message: '手机号不能为空' },
          {
            pattern: /^1[3|5|7|8]\d{9}$/,
            message: '手机号格式错误'
          }
        ],
        code: [
          { required: true, message: '验证码不能为空' },
          { pattern: /^\d{6}$/, message: '验证码格式错误' }
        ]
      }
    }
  },
  computed: {},
  watch: {},
  created () {},
  mounted () {},
  methods: {
    // 验证手机验证码
    async onSendSms () {
      // 1. 校验手机号
      try {
        await this.$refs.loginForm.validate('mobile')
      } catch (err) {
        return console.log(err)
      }

      // 2. 验证通过，显示倒计时
      this.isCountDownShow = true

      // 3. 请求发送验证码 }
    },
    // 验证手机验证码
    async onSubmit (value) {
      // 1- 获取表单数据
      const user = this.user

      // 2- 表单验证
      this.$toast.loading({
        message: '登录中...',
        forbidClick: true, // 禁用背景点击
        duration: 0 // 持续时间，默认是 2000，如果为 0 则持续展示
      })

      // 3- 提交表单请求登录

      try {
        const { data } = await login(user)
        // console.log('登录成功', res)
        this.$store.commit('setUser', data.data)

        this.$toast.success('登录成功')

        // 登录成功，跳转到原来页面
        // back的方式不严谨，后面讲功能优化的时候再说
        this.$router.back()
      } catch (error) {
        if (error.response.status === 400) {
          console.log('手机号或验证码错误')
          this.$toast.fail('手机号或验证码错误')
        } else {
          console.log('登录失败，请稍后重试', error)
          this.$toast.fail('登录失败，请稍后重试')
        }
      }

      // 4- 根据表单请求响应结果处理后续操作
    }
  }
}
</script>

<style lang="less" scoped>
.login-container {
  .toutiao {
    font-size: 37px;
  }
  .send-sms-btn {
    width: 152px;
    height: 46px;
    line-height: 46px;
    background-color: #ededed;
    font-size: 22px;
    color: #666;
  }
  .login-btn-wrap {
    padding: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
      border: none;
    }
  }
}

/deep/ .van-button--primary {
  border-color: #1989fa !important;
}
.page-nav-bar {
  background-color: #3296fa !important;
  .van-nav-bar__title, .van-icon {
    color: #fff !important;
  }
}
</style>
